Iterating String Array with C While Loop

Introduction

In this lab, you will learn how to iterate through a list of strings using a while loop in the C programming language. We will declare an array of strings and then use a while loop to print each string in the array until we reach the end of the list.

Skills Graph

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Iterate a List of Strings Using a While Loop

In this lab, you will learn how to iterate a list of strings using a while loop.

Create a new file named while-loop.c and open it in WebIDE.
Copy and paste the following code into the file:
```
#include <stdio.h>
void main()
{
  const char* flowers[] =
    {"Rose", "Poppy", "Lily", "Tulip", "Marigold", NULL};

  int i = 0;
  while (flowers[i]){
    printf("%s\n\n\n",flowers[i]);
    ++i;
  }
}
```
This code declares an array of constant char pointers, named flowers, which stores a list of strings representing different types of flowers. The array is terminated with a NULL value, which will serve as the condition for the while loop.
Save the file and exit the text editor.
Compile the code using the following command in the terminal:
```
$ gcc while-loop.c -o while-loop
```
This command compiles the C code and generates an executable file named while-loop.
Run the program by executing the following command:
```
$ ./while-loop
```
The program will iterate through the flowers array using a while loop and print each string on a new line. The loop will continue until it reaches the NULL value in the array.
Observe the output of the program:
```
Rose
Poppy
Lily
Tulip
Marigold
```

The output should display each string in the flowers array on separate lines.

Summary

After completing this lab, you will be able to use a while loop to iterate through a list of strings in C. This technique can be useful when working with arrays of strings and needing to perform operations on each string individually.

Iterating String Array with C While Loop

Introduction

Skills Graph

Iterate a List of Strings Using a While Loop

Summary

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